Polypyrrole (pPy) thin films were synthesized electrochemically by a pulse method on platinum electrodes in N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid (PYR14TFSI). The pulse deposition method allowed the synthesis of well adherent pPy layers on Pt that are attractive for the realization of sensors and biosensors because of their good selectivity with respect to the most common interferents. The EIS (Electrochemical Impedance Spectroscopy) response to hydrogen peroxide and biological interferents indicated pPy as a highly sensitive electrochemical platform for the impedimetric sensing of H2O2. The polymer was overoxidated (opPy) before the characterization to prevent its electrochemical contribution when working in aqueous solution. opPy was then functionalized by glucose oxidase enzyme and the device so assembled was tested as a impedimetric biosensor. This technique showed to have great chances to substitute classic detection methods.
Pulsed Electrosynthesis of Polypyrrole in N-Butyl-N-Methyl- Pyrrolidinium Bis(Trifluoromethanesulfonyl)Imide Ionic Liquid for Electrochemical Sensors / Zane, Daniela; Bianchini, Chiara; Appetecchi, giovanni battista; Curulli, A; Passerini, S.. - In: ECS TRANSACTIONS. - ISSN 1938-5862. - STAMPA. - 25:(2010), pp. 63-71. (Intervento presentato al convegno Symposium on Impedance Techniques - Diagnostics and Sensing Applications Held During the 216th Meeting of the Electrochemical-Society (ECS) tenutosi a Vienna, AUSTRIA nel OCT 04-09, 2009) [10.1149/1.3324744].
Pulsed Electrosynthesis of Polypyrrole in N-Butyl-N-Methyl- Pyrrolidinium Bis(Trifluoromethanesulfonyl)Imide Ionic Liquid for Electrochemical Sensors
ZANE, DANIELA;BIANCHINI, CHIARA;APPETECCHI, giovanni battista;PASSERINI S.
2010
Abstract
Polypyrrole (pPy) thin films were synthesized electrochemically by a pulse method on platinum electrodes in N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid (PYR14TFSI). The pulse deposition method allowed the synthesis of well adherent pPy layers on Pt that are attractive for the realization of sensors and biosensors because of their good selectivity with respect to the most common interferents. The EIS (Electrochemical Impedance Spectroscopy) response to hydrogen peroxide and biological interferents indicated pPy as a highly sensitive electrochemical platform for the impedimetric sensing of H2O2. The polymer was overoxidated (opPy) before the characterization to prevent its electrochemical contribution when working in aqueous solution. opPy was then functionalized by glucose oxidase enzyme and the device so assembled was tested as a impedimetric biosensor. This technique showed to have great chances to substitute classic detection methods.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
